If you replace your engine with one that is not exactly the same year or displacement you are asking for problems. The manufacturers are constantly improving performance and efficiency by changing parameters in the computer controlled engine management systems. It will be different for every year and engine size, thus using the computer from say a '91 3.4L to control a '91 3.8L could cause a rich condition or some other issue, timing or high idle, etc.
on the crank behind the front cover
Not very easily if at all, and why would you want to?
If you mean 3.8 Litre engine, the answer is 200 horsepower, from the factory. 225 lb/ft of torque.
38L is 10.04 US gallons.
The 3.8 engine is similar in all the grand prix 97 to 2003 Follow the top radiator hose to the top of the engine, the place it bolts up to should be your themostat. Remove the hose, take the bolts out (usually two) put the new one in with a new gasket and bolt it back together. For thermostat replacement step by step instructions with pics- http://www.pfyc.com/supportfiles/tstat/tstat.htm Hope this helps. "G"
haynes repair manuals are good but you can go to autozone.com and they have online repair manuels as well it a good site for a lot of information on repair work.
it's located on the firewall right in back of the intake
Well, the transmissions are interchangable, so your good there. But if you put a 3.3l in youll have to change the ECM because they have different settings for the 3.8 and 3.3. So if you change the ECM I think youll be ok. My email is RPplayer73@aol.com
They always blow the head gaskets between 70 and 100 thousand miles.
A haynes manual...
The mass air flow sensor is located in the throttle body housing on the 3800 engine. There should be 4 screws that hold it down to the housing. Once they screws are removed, the sensor lifts off of the throttle body.